- All sections
- A - Human necessities
- A61K - Preparations for medical, dental or toiletry purposes
- A61K 31/357 - Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having two or more oxygen atoms in the same ring, e.g. crown ethers, guanadrel
Patent holdings for IPC class A61K 31/357
Total number of patents in this class: 1806
10-year publication summary
|
145
|
138
|
124
|
164
|
161
|
146
|
132
|
122
|
105
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Eisai R&D Management Co., Ltd. | 1271 |
42 |
| The Regents of the University of California | 19479 |
35 |
| The Johns Hopkins University | 5519 |
24 |
| Tasly Pharmaceutical Group Co., Ltd. | 115 |
23 |
| Janssen Pharmaceutica N.V. | 3625 |
19 |
| The Brigham and Women's Hospital, Inc. | 2131 |
19 |
| Tapestry Pharmaceuticals, Inc. | 27 |
17 |
| Massachusetts Institute of Technology | 9903 |
16 |
| Sorrento Therapeutics, Inc. | 273 |
14 |
| Korea Research Institute of Bioscience and Biotechnology | 1051 |
13 |
| Novartis AG | 11297 |
12 |
| President and Fellows of Harvard College | 5904 |
12 |
| Infirst Healthcare Limited | 62 |
12 |
| Pfizer Inc. | 3373 |
11 |
| Cedars-Sinai Medical Center | 1131 |
11 |
| Bio-Pharm Solutions Co., Ltd. | 60 |
10 |
| Board of Regents of the University of Nebraska | 738 |
10 |
| Nutramax Laboratories, Inc. | 252 |
10 |
| Unigen, Inc. | 116 |
10 |
| Centre National de La Recherche Scientifique | 10052 |
9 |
| Other owners | 1477 |